发明名称 |
Portable underwater signalling transducer |
摘要 |
A portable underwater signalling apparatus for use by divers having self-contained underwater breathing apparatus (scuba) to signal to other divers as well as surface and underwater vessels. The apparatus utilizes compressed air from the diver's tanks to drive a hammer against a diaphragm to cause sound waves to be transmitted through the water.
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申请公布号 |
US4095667(A) |
申请公布日期 |
1978.06.20 |
申请号 |
US19770760808 |
申请日期 |
1977.01.19 |
申请人 |
MAHIG, JOSEPH;ALLEN, C. TOM |
发明人 |
MAHIG, JOSEPH;ALLEN, C. TOM |
分类号 |
G10K9/10;H04B11/00;(IPC1-7):B63B45/08;G01L19/12 |
主分类号 |
G10K9/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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